﻿#region Copyright (c) 2007 by Dan Shechter
////////////////////////////////////////////////////////////////////////////////////////
////
//  IBNet, an Interactive Brokers TWS .NET Client & Server implmentation
//  by Dan Shechter
////////////////////////////////////////////////////////////////////////////////////////
//  License: MPL 1.1/GPL 2.0/LGPL 2.1
//  
//  The contents of this file are subject to the Mozilla Public License Version 
//  1.1 (the "License"); you may not use this file except in compliance with 
//  the License. You may obtain a copy of the License at 
//  http://www.mozilla.org/MPL/
//  
//  Software distributed under the License is distributed on an "AS IS" basis,
//  WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
//  for the specific language governing rights and limitations under the
//  License.
//  
//  The Original Code is any part of this file that is not marked as a contribution.
//  
//  The Initial Developer of the Original Code is Dan Shecter.
//  Portions created by the Initial Developer are Copyright (C) 2007
//  the Initial Developer. All Rights Reserved.
//  
//  Contributor(s): None.
//  
//  Alternatively, the contents of this file may be used under the terms of
//  either the GNU General Public License Version 2 or later (the "GPL"), or
//  the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
//  in which case the provisions of the GPL or the LGPL are applicable instead
//  of those above. If you wish to allow use of your version of this file only
//  under the terms of either the GPL or the LGPL, and not to allow others to
//  use your version of this file under the terms of the MPL, indicate your
//  decision by deleting the provisions above and replace them with the notice
//  and other provisions required by the GPL or the LGPL. If you do not delete
//  the provisions above, a recipient may use your version of this file under
//  the terms of any one of the MPL, the GPL or the LGPL.
////////////////////////////////////////////////////////////////////////////////////////
#endregion
using System;
using System.Collections.Generic;
using System.Text;

namespace IBNet
{
    public enum ClockMode
    {
        Playback,
        Realtime
    }

    internal class Clock
    {
        private ClockMode _mode;
        private DateTime _lastPlaybackEventTime;

        public Clock(ClockMode mode)
        {
            _mode = mode;
        }


        public ClockMode Mode
        {
            get { return _mode; }
        }

        public DateTime Now
        {
            get
            {
                switch (_mode) {
                    case ClockMode.Realtime:
                        return DateTime.Now;
                    case ClockMode.Playback:
                        return _lastPlaybackEventTime;
                }
                return DateTime.MinValue;
            }
            set
            {
                if (_mode != ClockMode.Playback)
                    throw new InvalidOperationException("Cannot set Now when clock mode is not in plaback");

                _lastPlaybackEventTime = value;
            }

        }
    }
}
